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Fix difficulty adjustment start-of-epoch edge cases

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Mononaut 2023-03-26 07:27:11 +09:00
parent 5681ae3f5c
commit 5f60cb821a
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1 changed files with 2 additions and 2 deletions
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4
backend/src/api/difficulty-adjustment.ts
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@ -29,7 +29,7 @@ export function calcDifficultyAdjustment(
const BLOCK_SECONDS_TARGET = 600; // Bitcoin mainnet const BLOCK_SECONDS_TARGET = 600; // Bitcoin mainnet
const TESTNET_MAX_BLOCK_SECONDS = 1200; // Bitcoin testnet const TESTNET_MAX_BLOCK_SECONDS = 1200; // Bitcoin testnet
const diffSeconds = nowSeconds - DATime; const diffSeconds = Math.max(0, nowSeconds - DATime);
const blocksInEpoch = (blockHeight >= 0) ? blockHeight % EPOCH_BLOCK_LENGTH : 0; const blocksInEpoch = (blockHeight >= 0) ? blockHeight % EPOCH_BLOCK_LENGTH : 0;
const progressPercent = (blockHeight >= 0) ? blocksInEpoch / EPOCH_BLOCK_LENGTH * 100 : 100; const progressPercent = (blockHeight >= 0) ? blocksInEpoch / EPOCH_BLOCK_LENGTH * 100 : 100;
const remainingBlocks = EPOCH_BLOCK_LENGTH - blocksInEpoch; const remainingBlocks = EPOCH_BLOCK_LENGTH - blocksInEpoch;
@ -37,7 +37,7 @@ export function calcDifficultyAdjustment(
const expectedBlocks = diffSeconds / BLOCK_SECONDS_TARGET; const expectedBlocks = diffSeconds / BLOCK_SECONDS_TARGET;
let difficultyChange = 0; let difficultyChange = 0;
let timeAvgSecs = diffSeconds / blocksInEpoch; let timeAvgSecs = blocksInEpoch ? diffSeconds / blocksInEpoch : BLOCK_SECONDS_TARGET;
// Only calculate the estimate once we have 7.2% of blocks in current epoch // Only calculate the estimate once we have 7.2% of blocks in current epoch
if (blocksInEpoch >= ESTIMATE_LAG_BLOCKS) { if (blocksInEpoch >= ESTIMATE_LAG_BLOCKS) {
difficultyChange = (BLOCK_SECONDS_TARGET / timeAvgSecs - 1) * 100; difficultyChange = (BLOCK_SECONDS_TARGET / timeAvgSecs - 1) * 100;